nervy (adj.)
- agitated
- apprehensive
- beefy
- bluff
- bold
- bouncing
- brash
- cheeky
- cocky
- contemptuous
- crusty
- derisive
- discomposed
- disquieted
- disrespectful
- disturbed
- edgy
- excitable
- excited
- fearful
- feverish
- fidgety
- flip
- flippant
- flurried
- flustered
- forceful
- forcible
- forward
- fresh
- frightened
- full-blooded
- full-strength
- game
- gamy
- goosey
- gratuitous
- gritty
- gutsy
- hale
- hard
- hardy
- hearty
- hefty
- high-strung
- husky
- impertinent
- impudent
- irritable
- jerky
- jittery
- jumpy
- lusty
- mettlesome
- mighty
- nervous
- obstinate
- overstrung
- panicky
- pert
- pertinacious
- perturbed
- plucky
- potent
- powerful
- puissant
- red-blooded
- resolute
- restive
- restless
- robust
- robustious
- rude
- ruffled
- rugged
- sassy
- saucy
- shaken
- smart
- spirited
- spooky
- spunky
- stalwart
- steely
- stout
- strapping
- strong
- strong-willed
- sturdy
- tenacious
- tense
- tough
- troubled
- troublous
- turbulent
- uncalled-for
- uneasy
- unpeaceful
- unquiet
- upset
- uptight
- vigorous